Darriwilian
The base of the Darriwilian Stage is defined in a section through the Ningkuo Shale exposed at Huangnitang, Changshan County, Zhejiang Province, southeast China, where it coincides with the first appearance datum of the graptolite Undulograptus austrodentatus.
Geologic Events
Event Name | Type | Age | Area |
---|---|---|---|
Caledonian orogeny (concludes) | Orogeny | ~505 - ~400 Ma | Europe |
Overview of geological time
List all geological events